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Issue 91, 2016, Issue in Progress
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A nitrogen and cobalt co-doped titanium dioxide framework as a stable catalyst support for polymer electrolyte fuel cells

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Abstract

A cathode electrocatalyst comprising nitrogen and cobalt co-doped titania supported platinum (Pt/TiON–Co) is prepared. The presence of Co and N in TiO2, structural changes and morphologies are determined by various characterization techniques. The Pt/TiON–Co cathode electrocatalyst shows a higher cell performance as compared to Pt/TiO2–Co. An accelerated durability test shows that the Pt/TiON–Co cathode electrocatalyst is more stable than Pt deposited on carbon (Pt/C). Physical and electrochemical studies after ADT prove that Pt/TiON–Co undergoes less structural changes and performance degradation as compared to Pt/C. The Pt/TiON–Co cathode electrocatalyst exhibits a peak power density of 900 mW cm−2 with Pt loading of 0.2 mg cm−2 with 2 bar back pressure under H2–O2 configuration. The strong interaction between Pt and the TiON–Co moiety is responsible for the improved fuel cell performance that retains long-term stability and electrochemical surface area as compared to platinum deposited on carbon.

Graphical abstract: A nitrogen and cobalt co-doped titanium dioxide framework as a stable catalyst support for polymer electrolyte fuel cells

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Article information


Submitted
15 Jul 2016
Accepted
10 Sep 2016
First published
16 Sep 2016

RSC Adv., 2016,6, 88736-88750
Article type
Paper

A nitrogen and cobalt co-doped titanium dioxide framework as a stable catalyst support for polymer electrolyte fuel cells

P. Dhanasekaran, S. V. Selvaganesh and S. D. Bhat, RSC Adv., 2016, 6, 88736
DOI: 10.1039/C6RA18083C

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